Coupling for well rods



W. D. @Las COUPLING FOR WELL RODS Filed Avril s, 1923 2 snm-@nahen l w W al qw@ M G M 335% @QA/wf atbouwq Patented Oct.'2l, 1924. i

PATENT@ ori-1cm WALTER D. GILFS, F LEESVILLE, LOUISIANA.

oo UPLING ron WELL Application mea april a, 192s. semaine. saam.

To all 'whom t may' con/eem.'

Be it known that I, WALTER D. Glues, a citizen of the United States, residing at lLeesville, in the parish of Vernon and State l of Louisiana, have invented certain new and useful Improvements in a Coupling for Well Rods, of which the following is a specification. y

' The present invention relates to a 'coupling for well rods and has for its principal object to provide means disposed between the walking beam and the polished rod so as to prevent the undesirable friction on the rods which causes crystallizal tion thereof. Y

I have found from experience that the crystallization of the rods is caused by the heat imparted thereto during operation. It is now the practice to use rods twenty-:five

feet long and three-quarters of an inch in diameter which are rather elastic. They usually work in a three inch pipe at a depth of four hundred to four thousand feet having from thirty to one hundred and 8i thirtyl connections. The weight lifted by the rods varies between four thousand to ten thousand pounds. In taking out these rods they are roughly handled and sometimes bent. When the rods are put back in 3o the well with possibly some bent, during the up and down motion these rods will rub against the tubing causing friction that produces heat. Salt water being. in the well with the rods causes them to temper until sa eventually they crystallize. Another important factor which must be taken care of is the tendency of the rods to rotate due to friction. The top rod which is' known as the polished rod works through a stuffing 4e box at, the top of the tubing and'will not allow the rods to rotate. This produces heat aidin crystallization sufficiently that when a su den turn is brought to bear against the rods they snap. The purpose of this invention is to lovercome these diliiculties so as to greatly lengthen the life of the rods and to increase the eiiiciency of their operation. f

With the above and numerous other ob- 5o, jects in view as will appear as the descripn `l0 receive the steel cables 5 which are against rotation on the sha as will be hereinafter more fully described and claimed. 4 In the drawing* v Figure 1 is an elevation of the couphng,

' 'Figure 2 isan edge elevation thereof,

Figure 3 is a top plan thereof, Figure 4 is a horizontal section taken Q0 therethrough substantially on the line 4-#4 of Figure 1, and

' Figure 5 is a perspective view showing various elements forming parts of the coupling, said elements being disassembled. el

Referring to the drawing in detail it will be seenthat 1 designates the walking beam which is of conventional construction and 2 the polished rod which is also of conventional construction. In order to connect thev I0 walking beam with the polished rod l provide a coupling consisting of the upper bar 3 and the lower bar 4 connected by t e cables 5. The bars 3 and 4 and cables 5 are preferably formed of steel.` The' bar 3 is con- Np structed with a central bore 6 and the end bores 7. The end bores 7 receive the steel cables 5 which are locked in place by screws 8. The. bar 4 is provided Vwith a central bore 9 and en d bores 10. The end bores locked in place by the screws 11. The polished rod 2 is projected through the bore 9 and a spherical block 13 having a diametrically disposed bore 14 is positioned on the upper end of .the rod 2 above the bar 4 and locked tothe rod by means of a screw 15.

A stud 16 is constructed with a tapered body 17 having a threaded shank 18 at one end and a shank 19 at its other end which terminates in the oppositely dis sed apertured shoulders 20. The taperebody 17 is disposed in the bore 6yof the bar Band a spherical block 21 is threaded on the shank 18, a wrench grip extension 22 bein provided sov that itmay be easily `engag therewith. .A transverse a rture 22 is provided in the block 21 adapted to register with the transverse aperture 23 in the shank 18 so that a cotter in 24 may be inserted therethrough for ockin the block 18. The aperture shoulders 2O receive the ends of the cable 26 which' passes around the walk- 105 ing beam 1. v

' practicall With thisf device as the sole connection from the polished rod to the walking beam all friction in operation is over come an allows the rods to be disposed perpendicularly and in straight alignment with the well casing so that they will function properly.

I ave, in the present instance, shown and described the preferred embodiment of the invention which will give in practice satisfactory and reliable results, and it is to be understood` that the same is susceptible of modification in various particulars without departing from the spirit or scope of the, invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new is 1. A device of the class described including an upper bar and a lower bar, iexible means connecting the upper bar with the lower bar,

lower bar with a polished rod, a stud means for engaging the loosely mounted in the upper rod, a cable attached to thevstud and adapted to overhang a walking beam.

2. A device of the class described including an upper bar and a lower bar, flexible means for connecting the upper bar with the lower bar, a walking beam, a flexible member disposed about the walking bea-m, a stud including a tapered body, a shank at one end and a shouldered shank at the other end, said shouldered shank being engaged with said cable, said tapered body being disposed in the upper bar, a spherical block secured on the threaded shank, a polished rod piercing the lower bar, and a spherical block fixed to the end of the polished rod above the lower bar.

In testimony whereof I afiix my signature in presence of two Witnesses.

WALTER D. GILES. Witnesses:

ELEGTA WADE, THELMA MCALPIN. 

